What is the difference in distance between lane 1 of a 400 meter track and lane 8 of a 400 meter track?

If you run in lane 6 you are running further than someone in lane 1 because it is on the outside. The further out you run the longer the distance your doing

all of them are

Lane 1: 400 meters...Lane 8: 454.9 metersOn Olympic tracks have staggered starting lines to adjust for this in 400m races so each runner has the same length to run.

475-500m

It depends upon how many lanes there are. Is the outside lane 8 or lane 7?